Section 5(6)(ii) in The Punjab State Agricultural Marketing Service (Punishment and Appeal) Rules, 1988
(ii)The seniority on repromotion of employee reduced to a lower post or time-scale should be determined by the date of such repromotion in accordance with the orders issued by the competent authority on the subject of seniority. Such employee should not be restored to his original position unless this is specifically laid down at the time the order of punishment is passed or revised on appeal.